Automatic lock slider



Patented July zzo,` 1943 y measures 1 ,PATE

y N 2,224,188 L .i l AUToMA'rrcLock strom: Davis Marinsky, BronmN. Y., assigner of one-1 `neuw Louis nmermeeognv. n

`Application retinal-y 1o, 194el serial Ne. flannel4 n *pizoiaimsp@1.2520555 This invention relatesto sliders i as -exnpljoxred the accompanying drawingfin which certain emi bodiments of the inventionare"v disclosed, andin end" controlling movement` et the "element into locked position. In addition totheforegoingI` provide a slider structure whereinfashanl of 'the lock element lforms part of thepivot forming `means of the pull, the pivot ofthe pull being freely movable `on the `slider and engaging the lock elementonly inthe operation ,of drawing the-"slider along the `stringere incoupling and pncoupling `the saine. Stillanother feature ofmyinvention `resides in the tact that `-nvfymeans isprovided-to i `which the separate parts are designated byjsuit- `inwhich: i l V Fig. "1 i`s`- an exploded perspective view oia lslider made according tomy invention showing "able reference characters in each of the views. and

Fig. 2` is a`. "`1ongitudinal sectional view through a part "of theslider illustrating the parts inlas- `sembled position?" i f Fig.' 3 is an enlarged section `detailed view of a; part ofwa slider structure showing a modiilca-` `tion,and l l the lock elementin spaced arrangement with re" checkswinging movement of the `element into"I inoperative position aside from the normal tension or rigidityof, the strip or bar employed, thereby providing `automatic movement of the lock elenient into inoperative positionindependent of the pull in forceable movement "ot` the Vslideralong the stringersineither directionL` i In the adaptation of the invention illustrated e i the accompanying drawing and particularly as" shown in Fiss. 1 and 2 of thedrawing. a slider body'is generally identified by the rference" char# act/eri I 0 and this body employs the more or "lessi conventional spaced topand bottoni Iianged walls 1| end n between wmenis `fermes the 'channel F154 isaview similar `to Fig. showing an` other -adaptationof the invention, `In `lock sliders of the classgunder considera# `tion it has been the common practiceto employ lockpin orpawl elements onthepullof the slider `or directly actuated by the pull. Ithas` also jbeen f known to `employ Springnngersior "engaging the Stringer links with means controlling `or checking Tinovement of these `spring fingers` and still others "have employed springs acting on indeendent and `relatively` free pin orlock parts. *In

most` of these instancesa positive menthas beenprovided. p p

`?It is a purpose of myinvention to provide a slider with an automatically actuated lock element which v in itself andunaidedor unassisted y the pull or any other partici, the slider is frnoved into and maintainedin operative or locked i position; In apreferred adaptation ofthis invenf `tion I employ a lock element-,iin the form of an elongated springv strip or bar, that isito say, abarl `of a material having resilient orsping properties locking engagen. .the latter being `divided at the wide" end or the slider by the parting web il.

`Arranged longitudinally oi theouter sufaceof the top wall il is a rib iihavingatoneendfan elongated rivet forming portion i6. The other 301` `Adjacent the .block and extending;` longitudinally end of the `ribterminates in a dat stoprbiock |1.`

of"`the"'rib is a concave recess IB "terminating adjacent thegwide end portion er tneeiider in e more of lese abrupt and siishtlvrounded stop" wall" i9 adapted to checkmovement of the pivot pin portionziiofa pull`2| inone' dir'eetinalmovef ment on the slider; The other end portion of the recess lihas a` gradually curved cam` siir" `mee 22 over `which the pin 2n' rides in moving a lock element 23 or the i pin or paw! portions` thereof into inoperative position.

e The rib ii5`issubstantially ofthe same width` throughoutits length and the longthin stripor" l barwhich forms the `element 23, which. inthe formillustrated, is a flat spring,` is also prefer-' ablyoi the same width as thelribexcept forthe `lateral ertensions forming the pawl Vor pin `eie`` ments 2l atthefree `end portionVzE of said ele-'- "With means securingone end of the'strip or bar` `tothe sliderwall,` leavingthe otherend' free :to

*yieldably move `relatively to the slideriwall `inV moving one or more pawl'or pin elements into l.and out of the channel of the slider and still fur- `lther in providing on the `slider wall adjacent the iree `end of "said element a stop or seat limitingment as willclearly appear upon `corpisideration Fig. 1 of the drawing.

The iixed end portion of the element 23' hasl an elongated aperture 26 which nts snugly over the rivet-forming projection Iii. the latter acti ingas a key to maintain alignment "of the element 23 on the sliderand in assembling;` the parts the projection I6 is riveted over or otherwise headed as seen at 21, note Fig. 2, to retain the element 23 against displacement from the slider.

It will be noted from a consideration of Fig. 2 of the drawing that the element 23 is substantially equal in length to the length of the rib I5, thus said element, in conjunction with the rib, gives the appearance of a single enlargement extending longitudinally of the slider. This construction adapts itself to fasteners used on garments which are often laundered, because they are not readily injured during the cleaning operation. 1

The top wall II of the slider at opposite sides of the stop block, portion I1 of the rib I5 is provided with elongated apertures 28; These apertures are of sufficient length to provide free movement of the pins or pawls 24 into and out of the channel I3 of the slider. That is, aside from the tensional or spring properties of the strip 23, there is nothing which limits outward swinging movement of the end portion 25 of the element, the parts being arranged, however, so that the inner ends of the pins 24 are withdrawn from the channel I3 only enough to provide free movement of the slider along the stringers of the fastener. These stringers are not shown since they are very commonly known in the art to which applicant/s invention relates.

In connection with this free movement of the element 23 it will be also understood that, in the event that the slider is strained in either direction along the stringers, the spring properties of the element 23 will permit movement of the slider along the stri-ngers, thus minimizing possibility of breaking or destroying any part of the complete fastener Which might otherwise be experienced. It will also be understood that the spring tension of the element 23 may be controlled to adapt itself to fasteners designed for different uses and thevpresent invention is adaptable for use in connection with devices of the kind under consideration made from metal or plastic materials. If the device is in the form of a die cast body as illustrated in the accompanying drawing, the material will be of types and kinds capable of die cast formation.

- The pull 2| of the slider, in so far as the finger piece end 29 is concerned, may be of any desired construction but the pivot end portion which supports the pivot pin 20 preferably terminates in side arms 30 which are spaced apart sufficiently to clear the outer surface of the pins or pawls 24 so that the pull is free to drop into horizontal position upon the slider Wall as illustrated in Fig. 1 of the drawing. Preferably, the cross sectional contour of the pivot pin end 20 of the pull is such that the pin is freely disposed within the recess I8 particularly when in the central position of this recess. However, movement of the pin 20 toward either end of the slider will cause the pin to engage the under surface of the shank of the element 23 and withdraw the pins 24 from the channel I3 of the slider. With the construction shown in Figs. 1 and 2, if the pin 20 is moved in the direction of the wall I9 this wall will check the movement of the pull, whereas movement in the opposite direction will be checked by engagement of the pin 20 with the pin or pawl members 24.

In Fig. 3 of the drawing is shown a slight modification of the structure shown in Figs. 1 and 2 which consists simply in providing two stop walls 3| and 32 at opposite ends of the recess 33. The

stop wall 3I is substantially equivalent to the wall I9, whereas the stop wall 32 is employed instead of the cam surface 22. Otherwise, the structure in Fig. 3 will be the same as that shown in Figs. 1 and 2, and for identification purposes, the element is shown at 23, one of the pawl or lock pins at 24 and one of the aperturesv 28. In Fig. 3 the section is taken through one of the apertures 2l which will thus show the element 23 in side elevation.

In Fig. 4 of the drawing the element 23 has been omitted for sake of clarity but otherwise the showing in this figure is generally the same as in Fig. 3, the structure being modified to the further extent of providing in the rib 35 a recess Il having in-turned curved stop walls 3l and Il, the in-turned features being made possible by the flanges 39 and 4l] which,y in originally forming the casting, are cast in the upward direction indicated in dotted lines and then, by the use of suitable tools, are forced downwardly and inwardly producing the in-turned 39 and 40 which provide the rounded stop walls 38 and 39 conformi-ng substantially to the peripheral contour of the pivot pin portion 4I of the pull. With this construction it will appear that movement of the pivot pin portion in both directions on the slider is definitely checked by the stop'walls Il and 39 while permitting the pivot pin 4I to move outwardly a sufficient distance to disengale the lock pin parts of the lock element employed.

Where freely iiexible materials are employed in the construction of the element 23 it would be possible to flex this element sufficiently to completely withdraw the pin parts 24 not only from the apertures of the slider wall but beyond the stop blocks, for example the block I1, to facilitate attachment and detachment of diierent pulls with the slider. 1

In the construction shown it will be apparent that the relatively at and thin lock element 23 is supported by the outer surfaces of the rib in a position parallel to the outer wall of the slider and the long bearing surface of the rib reinforce! the element against crushing strain. The element forms part of the pivot-forming means o! the pull and the pivot of the pull also acts as a reinforcement against any crushing strain which might be applied to the element where it bridges the recess inthe rib.

Having fully described my invention what I claim as new and desire to -secure by Letters Patent, is:

1. An automatic lock slider of the class described ccmprising a rib extending longitudinally of one side wall of achanneled slider body, the outer surface of the rib intermediate the ends thereof having a recess, a pull having a pivot end extending across the recess of said rib, a yieldable lock element arranged upon the outer surface of the rib and bridging said recess to retain the pivot of the pull against displacement from said recess, means securing one end of said element to the slider, the other end of the element being freely movable toward and from the slider wall, and said last-named end of the element having a lock pin normally projecting into the channel of said slider.

2. An automatic lock slider of the class described comprising a rib extending longitudinally of one side wall of a channeled slider body. the outer surface of thel rib intermediate the ends thereof having a recess, a pull having a pivot end extending across the recess of said rib, a yieldable lock element arranged upon the outer sur- `face of the the pivot of the pull i against, displacement `from wall,

l i `allel relation to the slider wall` e e 5: An automatic `lock slidergof the class cle--` `scribed comprising aribi extending longitudinally offene side wall of ay channeled slider body, the

` of the:` rib intermediatethe ends thereof having a recessie pull having a pivot end` extending across `the recess of said rib, a yield y able lock` element arranged upon the outer surf face el' the rib and `bridging said recess to retain the pivot of the pull `against displacement from e said recess, means securing one `end of` said,e1e-l `ment to the slidenthe other end of the element being freely movable toward and from the slider i wall, said last-namedendfof the element having a loci:` pin normally projecting into the channel f v of `said slider, said first-named means comprising an elongated rivet keyingV said element `against,`

, outer surface saidrecess, `rneans securing one end offsaid ele- Vment totheslid'entheotlier,` end ofthe element being ireely'movable toward@landwfrorn;the'sliderV said-.lastfn'amed y end-gofilthe element` having l vlock pin normally projecties into the channel r 0f Saldsllidenmeansftoh cause the, lock: pin `to i move out `of the channel when said pivot is moved longitudinally lof the recess and means limiting such longitudinal movement of the pivot.

i 3. Anyautomatic lock slider of `the class dei scribed comprising a rib extending longitudinally of one `side wall of achanneled slider body,`the .i outer surface `of ,the rib intermediate the ends I thereof having arecess, `a `pull having a pivot end extending across the recess of said rib, a yield`` able lock element arranged upon the outer surface ofthe rib and bridging said recess to retain the pivot of the pull againstdisplacement `from `said recess, means securing `one endlof said elei ment to the slidergthe otherend of thelelement being freely movable-toward and from the slider will, said last-named end of the element having a lock pininormally projecting into thechannel of `said slider, meansr to cause said pivot end toengale said element in both directional movements pin of Said ele- V ment from the channel of the` slider, and means limitingmovement of said `pivot of saidpivot end to' Withdraw the rections longitudinally oi the recess `of said rib. `4. An automatic lock `slider scribed `comprising a rib extending longitudinally `of one side wall of a channeled slider body, the louter surface `of Athe ribintermediate the ends thereof having a recess, va pull having a` pivot end extending across the recess of said rib, a yieldable lock element arranged upon the` oiitergsur` gjiaoe of the rib and bridgingsaid recess to retain j the pivotof the pull against displacement from said recess, means` securing one end of saidele-` ment to the slider, the other end of the element e being freely movabletoward and from th slider "walLsaid last-namedend of the elementlhaving y aflock pin normally projecting into the channel nld slider, and the top of said rib forming spacedilat bearing portions onthe outerA surface `thereofadapted to support; said element `parlateral movement on said slider;` e i e 6. A `lock slider comprising a channeledbody,

toward and fromthe channel of said body and having a lock pin portion normally extended into the channel of said body by the spring properties of `said element, meanslimiting inward `moveof [the class de-f:

e i e e 2,324,788 rib andv bridging said recessfto'retain l slider wall forming,

,1 displace the pin `slider channel in curing one end of e e i other end of said element being `toward and from the channel of e i `having a lock pin portionnormallyextended into` the channel of `said body bythe` spring `pnoxaertles" or said element, means hunting inwardmovement said element, a free said body `and of the ,pin end of said element whilepermitting `unlimited outward movement o1' ,having a pin end portion, means on the slider wall forming,

y pull on Vsaid slider, and said last-namedmeans` f i y the pin end of the pull into engagement with said element to y displace the pin lock of the` element from the* e of the -pullin said end, apull e in commotion with part of said element. a free mounting of the pineend `ot the` including means adapted to urge slider channel in lthe movement either direction on the slider. 4

8. A lock slider comprising a channeled body,

`an elongated spring `lock element arranged centrally andlongitudinally of endln both dij said body, means se#` curingleone end of the element to said body, the 1 being freely exible l 3.

- towardi and from thechannel of said body and V V having a lock pin portion ,A

the ;channe1 of said body` by thespring properlimiting inward movei ment of the pinend of said `element wl`1ileper` `mitting unlimited outward movement of said end. p 1,

portion, means on the `other end `of` said element normally extended into` ties ofsaid element,` means `a pull having a pinend slider wall 'foi-nung,

e inconjunction with part ot said: element, a free strip of` resilient material, one end of the strii.` having` meansfacilitating attachment of the ele- ,i ment to a sneer, `and theother free end or said `said` end ofthe element e element having an angularly ,directed pin,y lock i `part disposed at one side edge portion of said end `of the element. i

10. In a,` lock slider portion of said end of pin lock` part.

1"1.\In` `ailocl: slider, an` elongated `channeled sliderbodyhaving spaced wallsjoinedat the wide r end thereof` in a connecting web, onewall of said 4body having an elongated `rib extending cen` trally `and longitudinally of theouter surface thereof, said rib termediate the ends thereof` for` receiving@` the pivot end of a pull, said recess dividingthe outer i i rib intolongitudinally spaced rist` surface of the e mounting of `the pin,` end of therpull on said slider, saidl last-named `means ,i ;including means adapted to urge the pin endoi` i e ftheA pull into engagement withsaid element` to y lock of the elementfromthe e the movement of the pull inf either direction onthe slider, and means tocheck ,i l

movements of'the pull onthe 1 f i of the class described, al"` y springloclr` element-l comprising `an elongated thin" `stripofiresilient material,l e L having `means facilitating attachment ofthe element to a slider, the other ment having anangularlydirected pinilock ,i disposed at one sideedge the element, and the other side edge portion oi' i havinga correspondingl one end `of the strip 5 free end of said elem@ having a transverse recess. in-

bearing surfaces, said Wall of the slider at one side of one of said bearing surfaces having an elongated aperture, and the other bearing surface having an outwardly projecting elongated key part.

12.v The combination with a slider for separable fasteners of the class described, of outwardly pro--v `jecting bearings on and spaced longitudinally of one wall of the slider, an elongated spring seat- 

